Double tubular lock



s. A. E. LARSEN.

DOUBLE TUBULAR LOCK.

Patented 001:. 11, 1921.

kWwy

UNITED STATES PATENT OFFICE.

SOFUS ANDREW EMIL LABSEN, OF COPENHAGEN, DENMARK.

DOUBLE TUBULAR LOCK.

Original application filed June 3, 1920, Serial No. 386,280. Divided andthis application filed January 13,

Serial No. 437,028.

To all whom it may concern:

Be it known that I, Sorus ANDREW EMIL LARSEN, subject of the Kingdom ofDenmark, residing at Vesterbrogads 126, C0 penhagen, Denmark, haveinvented certain new and useful Improvements in Double Tubular Locks, ofwhich the following is a specification The present invention relates toa tubular lock for doors and the like, and consists mainly therein, thatthe lock is manufactured as two cylinders, of which one, which containsthe bolt, in a known manner is inserted in a hole in the edge of thedoor, while the other, which contains the ward for register with the bitof the key, is arranged at a right angle to the first one andtangentially to it in a cylindrical hole, drilled entirely through thedoor.

The present application, in which the said invention is disclosed is adivision of my prior'application Serial No. 386,230, filed June 3, 1920.

I will describe my invention by the aid of the accompanying drawing, inwhich:

Figures 1 and 2 are fragmental vertical sections, taken at right anglesto each other, of a door in which the improved lock is used.

Fig. 3 is a perspective view of one of the lock cylinders.

On the cylinder 1, which contains the bolt and is arranged in a hole inthe edge of the door. is fastened another cylinder 2, which is insertedin a hole, drilled entirely through the door. The two cylinders 1 and 2are arranged in such a manner with their axes crossing and oil'setrelatively to each other, that one cylinderv enters somewhat into theother.

The two cylinders are rigidly connected Specification of Letters Patent.

Patented Oct. 11, 1921.

which is disposed against one surface of the door, and a similar plate22 is disposed against the other surface of the door: the portion of thedoor opening adjacent the plate 12 being enlarged, as shown, to permitthe insertion of the cylinder 2 and the engagement of its flanges 3 withthe edges of the notch in cylinder 1.

The cylinder 2 receives the key 6 and has one or more Wards 7, thatregister with the bit 8, which in the usual manner acts upon a talon 9or similar member connected with the bolt in the cylinder 1.

Instead of the key and the wards being formed as illustrated on thedrawing, the cylinder 2 may of course be constructed to receive a key ofthe pin-lock type or of some other type, and the part 2 need notnecessarily be cylindrical, but may be made of oval or angular crosssection, so long as 1t is made in such a manner that it may be insertedin the hole drilled entirely through the door.

Having now particularly described and ascertained the nature 01" my saidinven tion and in what manner the same is to be performed, I declarethat what I claim is 1. A double cylinder lock, comprising two cylindersdisposed with their axes crossing each other at right angles and offsetrelatively to each other, one of said cylinders having a pair ofoutwardly-flared lugs on the upper portion of its periphery, and theother cylinder having formed in the lower portion of its periphery adove-tail notch into which said lugs project and against the o positeside edges of which they bear.

2. double cylinder lock, comprising two cylinders disposed with theiraxes crossing each other at right angles and offset relae tively to eachother, one of said cylinders having a pair of outwardly-projecting lugson its periphery, and the other cylinder having formed in its peripherya notch into which said lugs project.

In testimony whereof I aiiix my signature.

SOFUS ANDREW EMIL LARSEN.

